Yery with diaeresis

Yery with diaeresis (Ӹ ӹ; italics: Ӹ ӹ ) is a letter of the Cyrillic script. Its form is derived from the Cyrillic letter Yery (Ы ы Ы ы ). In Unicode, this letter is known as "Yeru with Diaeresis".

Yery with diaeresis is used in the alphabet of the Hill Mari language, where it represents the mid central vowel, like the pronunciation of $⟨a⟩$ in "ago". It also appears in the Northwestern Mari language.